Find the modulus of the complex number.8
A. 2.83
B. 64
C. 8
D. 4
Answer: C
Mathematics
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 10 sin t - cos tFind the body's acceleration at time t = ?/4 sec.
A. - 
m/sec2
B. - 
m/sec2
C. 
m/sec2
D. 
m/sec2
Mathematics
Simplify the algebraic expression.-3(x + 7) + 9x
A. 6x + 21 B. 6x - 21 C. -12x - 21 D. 12x + 21
Mathematics
Simplify the complex rational expression.
A. - 
B. - 
C. - 27
D. - 
Mathematics
Solve the system of equations.4x + y - 2z + w = -1-x + 4y + z - 4w = 35x - y + 4z + 2w = 9 x + y - 4z - w = -1
A. (2, -6, 0, 4) B. (-3, 1, 2, 1) C. (2, -3, 1, -4) D. (-2, -1, 2, 4)
Mathematics